Comparison

S vs IoT EMS

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

S

This app helps installers of distributed PV power plants manage accounts and provides visual guides for microinverter installation. It offers rapid configuration, power generation data, and detailed alarm information for commissioning and diagnostics.

Highlights
  • Account monitoring
  • Visual installation guide
  • Microinverter configuration
  • Power generation data
  • Module-level data
  • Alarm information
  • Commissioning & diagnostics
Features
Read full description

S-miles Installer is a mobile application developed by Hoymiles especially for installers of distributed PV power plants. It provides an EASY-TO-USE procedure for monitoring accounts and a visual physical layout guide for the installation of microinverters, which helps installers configure monitoring accounts rapidly, and provides installers power generation data on both plant-level & module-level as well as detailed alarm information about the power plant for commissioning & diagnostics.

About

IoT EMS

Features
Read full description

Based on the Internet of things, big data, cloud computing and other modern information technologies, arcrui cloud platform connects the distributed automatic fire alarm equipment, electrical fire monitoring equipment, intelligent smoke detector, safe electricity and water and other equipment to form a network, and intelligently perceives, identifies and locates the status of these equipment, dynamically collects fire information in real time, and communicates with the public Through the cloud platform for data analysis, mining and trend analysis, it helps to achieve the goals of scientific early warning of fire, grid management, and implementation of multiple responsibility supervision. It fills the gap that the original "nine small places" and hazardous chemical production enterprises can not effectively monitor, adapts to all public and civil buildings, realizes the unattended safe electricity use, and realizes the actual needs of "automation", "intelligence", "systematization" of safe electricity use and "refinement" of electricity use management.

Screenshots

S4 screens
IoT EMS4 screens

Verdict

The call

The clearest difference is iOS requirement: IoT EMS at 13 against S's 15.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

S ships an update monthly, IoT EMS every 2 months. The most recent releases landed on November 7, 2026 and November 3, 2026 respectively.

Scorecard1 real difference · 9 level
S versus IoT EMS: the parameters behind the verdict, then further details
ParameterSIoT EMS
PriceFreeFree
Rating4.3 (15 ratings) — better—
Positive reviews65.8% of reviews—
Number of ratings15 — better—
Update frequencyMonthly — betterEvery 2 months
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPodiPhone, iPod
Requires iOS15.013 — better
Further details — not scored
Size224 MB25 MB
Age rating4+4+
DeveloperHoymiles Power Electronics Inc.ACREL CO.,LTD

In-app purchases

None

S

No in-app purchases

None

IoT EMS

No in-app purchases

Questions

Is S free?
S is free to download, with no in-app purchases.
Is IoT EMS free?
IoT EMS is free to download, with no in-app purchases.
Do S or IoT EMS have ads?
Neither S nor IoT EMS shows ads.
Which is updated more often, S or IoT EMS?
S ships an update monthly, and IoT EMS every 2 months. Most recently, S was updated on November 7, 2026 and IoT EMS on November 3, 2026.

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